Susan Wojcicki

Susan Wojcicki is the woman behind all of Google's ad products, AdWords and AdSense, Analytics and DoubleClick, and was responsible for 96% of the company's $37.9 billion revenue in 2011. A primary focus of the SVP of Advertising is delivering relevant ad content to consumers, something she's particularly proud of: she and her team have a term of endearment for Google's smart ad-serving system: "The SMARTASS." The mother of four has deep Google roots: she rented her garage to Sergey Brin and Larry Page and their nascent search engine in 1998, was the company's 16th hire, and her sister Anne (co-founder of personal DNA test 23andMe) is married to Brin. At the company's June I/O conference she made a concession to the female tech community: going forward Google branded t-shirts will be available to attendees in women's sizes.